Saw-filing-machine attachment



L. M. ELLIGTT. SAW FILING MACHINE ATTACHMENT.

APPLICATION FILED IAN. I0, T920.

Patented Dec. 13, 1921.

2 SHEETSSHEET l.

ma m L. M. ELLIOTT. SAW FILING MACHINE ATTACHMENT.

APPLICATION FILED IAN. Io, 1920.

1, 10c ,4.2'7,` PaIenIed De... 13, 1921.

2 SHEETS-SHEET 2.

HUI

O J 5 i E- L n vfr' I"D n 9 UNITED STATES LYMAN M. ELLIOTT, OF INDIANAPOLIS, INDIANA.

SAW-FILING-MACHINE ATTACHMENT. i

Specification of Letters Patent.

Patented Dec. 13, 1921.

Application led January 10, 1920. Serial No. 350,615.

To all whom t may concern Be it known that I, LYMAN M. ELLIOTT, a citizen of the United States, residing at Indianapolis, in the county of Marion and Stateof Indiana, have invented certain new and useful Improvements in Saw-Filing- Machine Attachments; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the artto which it appertains to make and use the same.

This invention relates to new and useful improvements in saw iiling machine attachments and more particularly to a saw feeding device and has for its primary object the provision of means adapted to coperate with the main feeding mechanism for moving the saw at predetermined times when said main feeding mechanism fails to move the saw on account of a broken tooth, thereby obviating the necessity of manually moving the saw so that the main feeding mechanism may again take up its operation.

Another object of this invention is the provision of a saw filing machine attachment of the above stated character which will be simple, durable and eiiicient, and which may be manufactured and sold at a comparatively low cost.

With these and other objects in view as will become more apparent as the description proceeds, the invention consists in certain novel features of construction, combination and arrangement of parts as will be hereinafter more fully described and claimed.

For a complete understanding of my in-v vention, reference is to be had to the following description and accompanying drawings, in which:

Figure l is a front elevation of a saw filing machine having an attachment applied thereto and constructed in accordance with my invention,

Fig. 2 is a fragmentary rear elevation of the same illustrating the back feed,

Fig. 3 is a plan view illustrating my attachment,

Fig. 4- is a sectional view of the same,

Fig. 5 is a plan view of an arm to be applied to the rear feed.

Referring in detail to the drawings, the numeral l indicates as an entirety an ordinary saw filing machine having asharpening mechanism 2, front and rear feeding mechanisms 8 and 4 that include levers 5 mounted for oscillatory movement. The saw to be sharpened is of the band type as illustrated at 6 and is adapted to be moved about the table of the machine so that the sharpening mechanism can sharpen the teeth as the saw is moved about said table in a step by step motion. scription relates to a well known type of automatic saw filing machine to which my invention is applied.

An elongated body 7 has formed on one end an arm 8 which is pivotally connected to the upper end of the front lever 5 and has secu'red to its other end a laterally projectlng tooth engaging member 9 for engagement between a pair of teeth of the band saw @for moving said saw around the table in a step by step motion during the oscillatory movement ofthe front lever 5; The front edge of the body 7 is provided with a cut out portion in which is slidably mounted a block 10 carrying a tooth engaging element or member 1l which is disposed rearwardly of the tooth engaging element 9 and may be adjusted toward and from the same so as to accommodate saws that have teeth that vary as to their shape and distances apart. The block l0 is slidably secured to the body 7 by means of a set screw l2 providing a construction wherein the block can be locked to the body 7 when desired. One end of the block l0 has rotatably connected thereto a screw threaded adjusting rod 13 which is threaded in an ear 13 formed in the body 7 and has secured to its free end a finger grip le; so that said rod can be rot-ated for the purpose of adjusting the block 10 in relation lto the body 7 when the set screw is released.

In operation, the tooth engaging element 9 engages one of the teeth of the saw and on the forward motion of the front lever 5 the saw is moved and in case the saw has broken teeth -which permits of the saw engaging element 9 to ride over the same, the saw engaging tooth 1l will engage the next; tooth and exert pressure on the same to move the saw forwardly, thereby obviating the necessity of the saw being manually moved to permit the tooth engaging elementi 9 to again take up its operation.

The rear lever 5 has pivoted thereto an arm 17 carrying a laterally extending tooth engaging element 18 adapted to engage the teeth 0f therear-run of the saw and has journaled `thereon an arm4 19 carrying a The foregoing detooth engaging element 2O which is so ioelement l is exeiting on a. tooth of the'saw,`

but in ease oi' a broken toothand toe tooth engaging eienient lSrides over the same, the tooth kengaging element 2O will Inove into engagement with the tooth'oi the saw and inovo the rear run of the-saw.. A

"Whiie have shown andV iesoribed. the pi'e'i'erved embodiment of my invention, it will be understood that minor changes in Veonstiuotion, combination and erangeinent .parts may Vbe Inode vWithout departing 'i'oni the spnit andV scope of the invention asV VQianned. n Y y Having thus deselbed my invention, What l. En combination, a bond saw lingnia- Chine having "iont and rear feeding ineohaniszns including oscillating levers, bodies oonneeted to said levers, teeth engaging elements on said bodies, and ineens carried by said bodies and adapted to engage the teeth of the saw and move the latter in case the teeth engaging elements ride over broken teeth. Y Y

2. in combination, a band sa-W tiling maohine'ineinding a eeding nieehanisni having an oscillating lever, a. body, an olni oonneoting the body to thelever, a pin oaiiied by one end .of said body and adapted to engage the teeth of the saw, a block ac'ijustably seouied to the body, a tooth engaging element seouiedto the body and adapted to engage e vtooth ot Vthe saw in oase the pin rides ovei and means for adjustingv o bioken tooth, the block endvvise of the body to vaiy the distanoe between the tooth engaging element and the pin to permit the use of the device on dieient saws wherein the ,distances vaiy beim/eenv the teeth of the saws. Y

intestiniony whereof affix niy signature in presence o'i' two witnesses.

UTT.

LYiiAN M. ELL

Witnesses:

VVERA DAY,

" En. BrLo. 

